I was browsing the question feed just now when I came across this question about Iron Man and Captain America's fight in Civil War. I had it marked as a favourite, which confused me, as I'd never seen it before. I checked the edit history, and it turns out it was originally an anime ID question (I routinely favourite these in case I ever find out the answer). Four hours ago, the OP rewrote it into a completely different question, for seemingly no reason whatsoever other than having not received any answers yet.
I'm aware that you're not allowed to change a question in such a way that it invalidates existing answers. This isn't the case here, but should we really be allowing people to change their question into something completely different just because they weren't getting an answer?